exception handeling for JSON.parse

[rene2u9]

First of all thanks for this great and simple sparql module!
I use it to get information from various endpoints and ran into some errors.

<?xml version="1.0"?>
^

SyntaxError: Unexpected token < in JSON at position 0
at Object.parse (native)
at Request.callback (.\node_modules\sparql\lib\sparql.coffee:138:59)
at IncomingMessage. (.\node_modules\request\main.js:214:44)
at emitNone (events.js:91:20)
at IncomingMessage.emit (events.js:185:7)
at endReadableNT (_stream_readable.js:974:12)
at _combinedTickCallback (internal/process/next_tick.js:80:11)
at process._tickCallback (internal/process/next_tick.js:104:9)

I had some problems handeling bad response formats and was not able to catch occuring exceptions. I fixed it by changing sparql.coffee:79 cb? null, try JSON.parse body catch e. i am new to nodejs and never code cs so im not sure if this is even an issue or my fault.